ML 55 AMG (163.174) V8-5.5L (113.981) (2001)
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Seat Occupant Sensor: Description and Operation
Design
Design
The passenger seat occupied and child seat recognition sensor (B48) consists of a sensor mat with associated electronic evaluation circuitry inserted into
the seat surface of the passenger seat. The following components are located in the sensor mat:
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foil pressure sensor for recognition of passenger seat occupation as well as
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two each transmission antennas and reception antennas for recognition of a child seat.
The resistance structure of the pressure sensitive foil pressure sensor laid out in strip shape covers the entire seat surface. One transmission and one
reception antenna each are printed onto the foil pressure sensor on the left and right half of the sensor mat. The foil pressure sensor as well as the
transmission and reception antennas in the sensor mat are connected electrically to the electronic evaluation circuitry in the passenger seat. This is
connected to the restraint systems control module (N2/7) (up to 11/99 ETR, airbag and side airbag control module (N2/2)) via a data bus.
